Maroc - SAU.COM.AU - content - 15/Nov 05:45

RB25 S2 Idles but doesn't want to rev

I'm a bit stuck with this one fellas, I recently decided to undertake a turbo conversion on my GTS-4, ended up pulling the motor to replace all the seals and do an mls head gasket and arp head studs while I was at it. Everything has gone according to plan, no oil or coolant leaks, compression checked out, and decided to give it a test before I book it in for a tune As it stands right now, the turbo only has oil lines plumbed so that I don't put boost into my untuned engine, and I'm using the factory GTS-T crossover pipe with a maf and poddy as a temporary intake. The car starts with relative ease and idles amazingly, however as the title suggests it really doesn't want to rev up, runs very smooth but almost feels choked out and unresponsive to the throttle, almost like it's running lean or something? I've triple checked my vacuum lines and timing with a timing light, injectors haven't been touched as of yet to avoid flooding the engine and worked perfectly beforehand, new plugs and coilpacks, I've even unbolted the cat just to see if it spontaneously collapsed, no dice The car currently has a nistune r32 gtst ecu installed so I have no way to check for fault codes. At this point I'm a bit stumped. Is this normal behaviour for a car with a turbo bolted onto the exhaust going nowhere? I'd imagine the turbo wouldn't cause this much restriction in the exhaust without the boost going through the intake. Any ideas? If necessary I can link a video of how it responds to full throttle while in neutral.